feat: Replace Lucide React with Material-UI for Google OAuth style

- Installed Material-UI (@mui/material, @emotion/react, @emotion/styled, @mui/icons-material)
- Removed unused Lucide React dependency
- Redesigned LoginPage with Material-UI to match Google OAuth login style
- Redesigned AuthorizePage with Material-UI to match Google OAuth permission screen
- Updated docker-compose to remove APISIX health check dependency from frontend

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

oauth/frontend/package.json

@@ -10,7 +10,11 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@emotion/react": "^11.14.0",
+    "@emotion/styled": "^11.14.1",
     "@hookform/resolvers": "^5.2.1",
+    "@mui/icons-material": "^7.3.1",
+    "@mui/material": "^7.3.1",
     "@tanstack/react-query": "^5.85.6",
     "axios": "^1.11.0",
     "react": "^19.1.1",
@@ -34,7 +38,6 @@
     "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-refresh": "^0.4.20",
     "globals": "^16.3.0",
-    "lucide-react": "^0.542.0",
     "postcss": "^8.5.6",
     "tailwind-merge": "^3.3.1",
     "tailwindcss": "^4.1.12",